An oral care appliance comprises: a fluid pump assembly (46) a source of gas (12) a source of mouthwash (50), wherein the pump is in operative communication with the source of the mouthwash and gas to produce a series of gas-injected fluid pulses or a series of fluid slugs in a jet stream directed to a nozzle assembly (80) from which the resulting pulses are directed to the teeth, wherein the pulses or slugs produce a breakdown effect on the mouthwash to its active ingredients, making the mouthwash more effective against the biofilm. The pulses have a pulse width within the range of 0.001-0.5 seconds, a pulse height from 0.1-10 Newtons, a rise/fall time range of 0.5-250 ms, a repetition rate in the range of 2H to 20Hz, and wherein the gas/liquid mixture range from 40-95% volume to volume gas to liquid. The fluid slugs in the jet flow have a volume in the range of 0.05-0.5 ml per orifice, a diameter in the range of 0.1-2 mm and a repetition rate within the range of 2Hz to 20Hz. The appliance further includes a mechanical teeth cleaning assembly, in combination with the gas-liquid assembly, which includes a drive system (160) and a brush assembly in operative contact with the drive system, the brush assembly having a set of bristles (152) at the distal end thereof, wherein in operation, the nozzle assembly is positioned within the brush assembly or comprises hollow bristles.La présente invention concerne un appareil de soin buccal qui comprend : un ensemble pompe à fluide (46) une source de gaz (12) une source de bain de bouche (50), la pompe étant en communication fonctionnelle avec la source de bain de bouche et de gaz pour produire une série dimpulsions de fluide injecté par gaz ou une série de projections de fluide dans un courant de jet dirigé vers un ensemble buse (80) depuis lequel les impulsions résultantes sont dirigées vers les dents, les impulsions ou projections produisant un effet de décomposition du bain de bouche en ses substances actives, ce qui rend l
